PSYC 230 UIUC EXAM 1 ACTUAL QUESTIONS

PSYC 230 UIUC EXAM 1 (ACTUAL / ) QUESTIONS

WITH 100% VERIFIED CORRECT SOLUTIONS

Perception the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events

Are there really 5 senses?No, there are from 7-12 different senses

neural transduction receptors, transduction and neural response

Sensation activation of sensory receptors due to a stimulus in the environment (physical stimulus---->neural signal)

Miss Signal Present Signal not detected

False Alarm Signal not present 1 / 3

Signal detected

Correct Rejection signal not present, signal not detected

receiver operating Characteristic (ROC) In a signal detection experiment, a curve representing the quality of a participant's performance

Changes in criterion shift to left=value is smaller and the observer will respond that the signal is present more of the time (more false alarms) shift to the right=value is larger and the observer will be less likely to respond that the signal was present

Differences in sensitivity (d prime) difference between the means of the Signal Present and Signal Absent distributions

Mechanoreceptors Sensory receptors responsible for sensing distortion in body tissues

SAI mechanoreceptors (slow) 2 / 3

detection of patterns, texture perception -rufini

SAII mechanoreceptors (slow) detect stretching of the skin; are fingers shaped properly?-merkel

FAI mechanoreceptors (fast) respond to low frequency vibrations ---> adjust grip -meissner

FAII mechanoreceptors (fast) when objects make contact with our skin -pacinian

Thermoreceptors detect changes in temperature (cold and warm fibers)

kinesthetic receptors Mechanoreceptors in muscles, tendons, and joints Play an important role in sense of where limbs are, what kinds of movements are made

• / 3